High-pressure safety-valve.



l. ACEBAL.

HIGH PRESSURE SAFETY VALVE.

APPLmAnoN FILED FEB-7.1917. RENEWED JUNE 3. 1918.

1,290,030. Patented Jan 7,1919.

FIG. 4. m 3.

H610. IG. 11.

was

FIGJZ. H613. F1614. FIG-.15. H616. H-

simple safety valve,

- posifre end of the cylinder phragni 10, hold in plnee by a clamping of the valve sent 9 in Fig. l.

oivirno $TrlfiTl-ES PATENT OFFICE JOSEPH ACEBAL, 0F HABANA, CUBA.

HIGHJPRESSURE SAFETY-VALVE.

meoos'o.

To all whom it may concern.

Be it known that I, Josern AoEBAL, a citizen of Colon, residing have invented a new and useful High-Pressure Safety-Valve, of which the following is a specification.

My invention relates to safety valves used to prevent too high pressure of steam, gas, compressed air and similar elements; and the object is to provide a novel, efficient and which can not easily be put out of order by accident or by inexperienced or unskilled persons and which is especially zidupted for high pressure.

In the accompanying drawing:

Figure l is a, partly sectional. side elevetion of my improved safety valve and a pressure gage mounted upon it. 2 is s, righthand view o? the adjacent cap in F g. 1. Fig. 3 :1 face View and Fig. l on end view of the diaphragm 10 in Fig. 1. Fig. 5 is aright hood end view of the valve plug. Fig. 8 is e. side view of the valve lug shown in Fig. l is it right hand end View 8 is on edge view and Fig. 9 is an inside iew of the clamping cap 18 in Fig. 1. Fig. 10 is a side view and ll. on end View of o fiber plug or disk carried by the valve plug. ig. i3 is an edge viewnnd Fig. 7.3 o face view of the inner spring support or disk in Fig. 1. Fig. 14 is an edge View and Fig. 15 at face View of the outer spring support 24 in Fig. 3.. Fig. lfiis e side view and Fig. I? on end view of either one of two compression coil springs employed in the valve, one stronger than the other.

Referring to the drawing by reference numerals, 1 designates the main valve shell or chamber. It is provided with a hollow stem 2 having a hexog'onahor octagonal, portion 3, for a wrench to engage and screw the stem into a threaded aperture in the steam boiler or other vessel upon which the safety valve is to be used-r Threaded in the top of the shell is a hole 4 for the pipe 5 of a pressure indicating gage .6. And in the middle of the shell is a honzontal cylindrical chamber 7, having in one end an exhaust opening 8' with a valve seat Qsecured into the inner end of it. The opis closed by a (liar covcrlll threaded upon the end of the shell Specification of Letters Patent. Application filed February 7, 1817; Serial No. 147,079. Renewed June at Habana, (lube,

Patented Jim. '17, 1919.

53, 1918. Serial No. 888,038.

and pressing the diaphragm against the end of the shell.

Slidahle iii-the cylindrical valve chamber 7 is a valve fling 12, having spider arms 13;- to hold it in axial position in the choinher and allow the steam or'compressed airto pass freely along to the diaphragm 10.

One end of the valve In is provided with a central stud 14, whloh s at all times held in contact with the diaphragm bya light coil spring 15. The other end is provided with a disk 16, of fiber or other matcrinl softer than the valve seat and retained in a cavity 17 by an annular screw ca 18.

he cap or section 11 of the shell is "tinned I with a central cylindrical extension 19, of smaller diameter than the valve chamber and provided with an externally and-internally threaded end portion 2Q, which is closed by a screw cap 21. In said end extension 19 is arranged a comfression coil springflt much 75 stronger than t e spring- 15, and having its ends supported by two movable disks 24, 25; the latter disk'having a, central convex face bearing against the diaphragm, ,while the disk 2% has a central cavity for the point of the screw 22;" snide-crew serving to so regulate the tension of the spring 23 that the valve will open automatically and let out the surplus pressure when the gage 6 indicates a highecpressure than it is desired to carry. 26, 27 are on let apertures in lihfi llolr low extension; 19, n, the cap 21, respectively, to guard again possible air pressure i therein. The dinphragm IO may be made of sheet copper or ther metol vvhich will easily bend or spring ack and forth. a In the opera on of ,the devioe,the-spring 23 keeps the valve normally closed,-iljnt when the pressure of steam'or airin' the valve chamber 7 getq presses the sp spring 15 a chance away from the valve the sur'filus steam or tect the screw 22 from unwarranted turning. 105

What I claim is: 1. In it safety valve, a valve chamber lmvmg a hollow stem for securing 1t to a veshigher thanpmdetemiinetl "it to have it, it acts ontho digphm ds' ng '28 and'thorebygives-fh 1.

lowdflto 1 escape. The cap 21 may be sore ed tightly sel holding steam, air or gas under pressure; said chamber having atone end an outlet opening with an inwardly facing valve seat therein, a spider-shaped valve plug slidable in the chamber and adapted to close with one end the opening in the valve seat, and having at the other end a central stud, a diaphragm arranged to bear with its middle portion against the stud, a coil spring beyond the diaphragm, a movable member supporting each end of the spring, one of said members having a convex face bearing against the diaphragm, a tension regulating screw arranged to act on the other member, and a comparatively light spring arranged to act on the valve plug to hold it at all times in contact with the diaphragm.

2. In a safety valve, a valve chamber having a hollow stemsecurable to a boiler or other vessel in which pressure is raised; said chamber having at one end an outlet with a valve seat therein, a spider-shaped valve plug slidable in the chamber and adapted to close with one end the opening in the valve seat, and having at the other end a central stud, a diaphragm arranged to bear with its middle portion against the stud, a coil spring beyond the diaphragm, a movable member-supporting each end of the spring, one of said members having a, convex face bearing against the diaphragm and a tension regulating screw arranged to act on the other member, a lighter coil spring arranged with one end about the valve seat and the other against the spider so as to act on the valve plug to hold it at all times in contact With the diaphragm; said valve chamber being made up of two sections, one section screW-threaded-into the other and having near said threaded portion internal annular shoulders between which the diaphragm is clamped,

3. In a safety valve, a valve chamber having a hollow stem for securing it to a vessel holding steam, air or gas under pressure; said chamber having at one end an outlet opening with an inwardly facing valve seat therein, a spider-shaped valve-plug slidable in the chamber and adapted to close with one end the opening in the valve seat, and having at the other end a central stud, a diaphragm arranged to bear with its middle portion against the stud, a coil spring beyond the diaphragm, a movable member supporting each end of the spring, one of said members having a conveX face bearing against the diaphragm, a tension regulating screw arranged to act on the other member, and a comparatively light spring'arrangcd to act on the valve plug to hold it at all times in contact with the diaphragm, said valve chamber having a vent hole intermediate the spring-supporting members.

4. The combination of a. valve chamber having a valve seat through which to exhaust surplus pressure, a spider-shaped valve plug arranged to close said seat, a spring moving said plug against the seat, a screw for regulating the tension of said spring, a screw-cap protecting and concealing said screw, means for the pressure to act on and allow the plug to move from the seat, and an auxiliary spring acting between the spider- 'shapcd plug and the base of the valve seat to insure such movement of the plug.

In testimony whereof I afiix my signature JOSEPH ACEBAL, 

